Interest posts to your account on a schedule set by your bank

Your savings account earns interest continuously, but the bank only adds that interest to your balance on specific dates. Most banks post interest monthly, though some post quarterly or daily. The frequency depends on your bank's terms and the type of account you hold. You can find your account's posting schedule in the disclosure document your bank gave you when you opened the account, or by logging into your online banking portal and looking for "account details" or "interest information."

The timing matters because interest only starts earning on money that's actually in your account. If you deposit $1,000 on the 15th and your bank posts interest on the last day of the month, you'll earn interest on that $1,000 for about two weeks. If you withdraw it before the posting date, you lose the interest that would have accrued during that period.

Key Takeaways

  • Most banks post interest monthly, but some post daily, weekly, or quarterly—check your account disclosure or online banking portal to find your schedule.
  • Interest accrues (builds up) daily based on your balance, but you only see it added to your account on the posting date.
  • Withdrawing money before the interest posts means you lose the interest that accrued on that withdrawn amount.
  • The Annual Percentage Yield (APY) your bank advertises already accounts for how often interest is compounded, so you don't need to calculate it yourself.

The difference between accrual and posting

Banks calculate interest daily based on your account balance, even though you don't see it yet. This daily calculation is called accrual. The bank is tracking how much interest you've earned each day, but that money isn't yours until the bank actually adds it to your account on the posting date.

Think of it like a running total. On day one, you earn a small amount of interest. On day two, you earn interest on your original balance plus the interest from day one. This compounds—meaning interest earns interest—until the posting date arrives and the bank deposits the full amount into your account. After that, the next cycle begins.

If you close your account or withdraw all your money before the posting date, you forfeit the accrued interest that hasn't posted yet. Some banks will still pay you the accrued interest as a courtesy, but they're not required to. Always check your account terms or call your bank if you're planning a large withdrawal near the end of a posting cycle.

Why posting frequency matters for your money

A bank that posts interest daily compounds your money more often than one that posts monthly, which means you earn slightly more over time. The difference is small on modest balances, but it adds up. A $10,000 balance earning 4.5% APY will grow faster if interest posts daily than if it posts monthly, because each daily posting means the next day's interest is calculated on a slightly larger balance.

However, the APY (Annual Percentage Yield) your bank advertises already includes the effect of compounding at that bank's posting frequency. You don't need to do any math yourself. If Bank A advertises 4.5% APY with daily posting and Bank B advertises 4.5% APY with monthly posting, they're both telling you that you'll earn 4.5% per year on your balance. The compounding is already baked into that number.

The real difference comes when you compare APYs across banks. A bank offering 4.75% APY will pay you more than one offering 4.5% APY, regardless of posting frequency. Focus on the APY first, then use posting frequency as a tiebreaker if two banks offer nearly identical rates.

What happens if you deposit money mid-cycle

When you deposit money partway through a posting cycle, that new money starts earning interest when ready, but only from the day it arrives. If you deposit $500 on the 20th and your bank posts interest on the 30th, you'll earn interest on that $500 for 10 days. The interest earned during those 10 days will be added to your account on the 30th along with the interest on your previous balance.

Some banks use a method called average daily balance, which means they calculate your interest based on what you had in the account each day of the posting cycle. Others use the balance on a specific date (like the last day of the month). Your account disclosure will tell you which method your bank uses. For most savers, the difference is negligible, but it's worth knowing if you make large deposits or withdrawals near the posting date.

How to track when interest posts to your account

Log into your online banking portal and look at your transaction history. You'll see deposits labeled "interest paid" or "interest deposit" on the dates your bank posts. Write down those dates so you know when to expect the next posting. Most banks are consistent—if they post on the last day of each month, they'll do it every month on or near that date.

If you don't see interest posting when you expect it, check your account disclosure again to confirm the posting schedule. Some banks post on business days only, so if the posting date falls on a weekend or holiday, it may arrive the next business day. If interest still hasn't appeared after the expected date plus a few business days, contact your bank to ask whether there's a problem with your account.

Interest posting and minimum balance requirements

Some savings accounts require you to maintain a minimum balance to earn interest. If your account has this requirement, you must have at least that amount in the account on the posting date for the bank to credit interest. If you drop below the minimum before posting, you may earn no interest that cycle, or you may be charged a fee instead.

Check your account disclosure for any minimum balance rules. If your account requires $500 minimum and you have $450 on the posting date, you won't earn interest that month. Deposit the extra $50 before the posting date to stay may be able to access. Some banks are flexible about this and will still pay interest if you're only slightly below the minimum, but don't count on it—the disclosure is what matters.

Frequently Asked Questions

Can I withdraw money right before interest posts and still get paid?

No. Interest only posts on money that's in your account on the posting date. If you withdraw funds before that date, you lose the interest accrued on that amount. Some banks may pay accrued interest as a courtesy, but you have no may provide. If you're planning a withdrawal, check with your bank first about whether you'll lose interest.

What if my bank changes its interest rate mid-month?

The new rate applies to interest accrued after the change takes effect, not retroactively to earlier in the month. If your bank lowers the rate on the 15th, you'll earn the old rate on your balance from the 1st to the 14th, and the new rate from the 15th onward. Both amounts post together on the posting date.

Do I have to do anything to receive the interest payment?

No. Interest posts automatically on the schedule your bank set. You don't need to take any action. The money appears in your account on the posting date without you having to do anything.

Is interest taxable?

Yes. Interest earned on a savings account is taxable income. Your bank will send you a 1099-INT form at the end of the year if you earned $10 or more in interest. You report this on your tax return. Keep records of your interest earnings throughout the year.

Why does my bank show different interest amounts each month?

The amount of interest you earn depends on your account balance during that posting cycle. If your balance was higher one month than another, you'll earn more interest that month. Interest also depends on the APY your bank is currently offering—if rates change, your interest payment will change too.